Mapping the Plastic
Title: Mapping the Plastic Speaker: Simon Ironside Chair FIG Working Group 4.3 Date: 18 & 19 November 2019 1 Addressing the alarming problem of plastic pollution of our waterways Mapping the A surveyor’s perspective Plastic Simon Ironside Chair FIG Working Group 4.3 Plastic clogs up a waterway in Yangon, Myanmar. courtesy of Global New Light of Myanmar, 5 June 2018 Plastic Pollution Overview (Waterways) The Commonwealth Scientific and Industrial Research Organisation, Australia (CSIRO) • Yangtze River, Yellow Sea, Asia • Indus River, Arabian Sea, Asia • Yellow River (Huang He), Yellow Sea, Asia Top 10 river • Hai River, Yellow Sea, Asia • Nile, Mediterranean Sea, Africa systems • Meghna/Bramaputra/Ganges, Bay of Bengal, Asia contributing • Pearl River (Zhujiang), South China Sea/East Sea, Asia • Amur River (Heilong Jiang), Sea of Okhotsk, Asia to ocean • Niger River, Gulf of Guinea, Africa plastic • Mekong River, South China Sea/East Sea, Asia *Export of plastic debris by rivers into the sea - Authors: Christian Schmidt, Tobias Krauth, Stephan Wagner, Reprinted with permission from Environmental Science & Technology 2017, 51, 21, 12246-12253. Copyright 2017, American Chemical Society.` • While ocean plastic remains a daunting problem, this could be good news for the quest to control it. Export of plastic • These 10 waterways contribute between 88 and 95 percent of the total plastic load that oceans receive via debris by rivers rivers and would be good places to focus on better waste into the sea - management. Authors: Christian • The high fraction of a few river catchments contributing the vast majority of the total load implies that potential Schmidt, Tobias Krauth, mitigation measures would be highly efficient when Stephan Wagner applied in the high-load rivers • Reducing plastic loads by 50 percent in the 10 top-ranked rivers, would reduce the total river-based load to the sea by 45 percent.
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